ステンレス鋼溶接部の成分偏析と透過X線写真にあらわれる影
1987 年 5 巻 1 号 p. 31-36
詳細
1987 年 5 巻 1 号 p. 31-36
In previous work it has been shown that diffraction effects in the relatively coarse-grained metal of the weld is a prime cause of the mottling.
However, the mottling is most commonly observed in thin welds when one is using low voltage X-rays, with which differential absorption will be greater. There appears to be a possibility that a part of the mottling might be due to small differences in X-ray absorption in individual grains in the metal.
The extent of the contribution of the differential absorption to the mottled appearance of radiographs has, therefore, been studied using austenitic stainless steel welds.
Experimental results show that the extent of the contribution from the differential absorption is unimportant in so far as the austenitic stainless steel weld is concerned.
